Solar based Automatic Grass Cutter

IJSTE - International Journal of Science Technology & Engineering | Volume 3 | Issue 07 | January 2017 ISSN (online): 2349-784X

Solar based Automatic Grass Cutter Y.M.Gaikwd Department Electronic & Telecommunication Engineering Sandip Foundation, Sandip Institute of Technology & Research Center, Nasik

Pooja.S.Ighe Department Electronic & Telecommunication Engineering Sandip Foundation, Sandip Institute of Technology & Research Center, Nasik

Harshali.A.Bagul Department Electronic & Telecommunication Engineering Sandip Foundation, Sandip Institute of Technology & Research Center, Nasik

Vishakha.S.Birari Department Electronic & Telecommunication Engineering Sandip Foundation, Sandip Institute of Technology & Research Center, Nasik

Abstract This paper is based on survey of identification of classification of solar based grass cutter. The solar grass cutter is a fully automated grass cutting robotic vehicle powered by solar energy that also avoids obstacles and is capable of fully automated grass cutting without the need of any human interaction. The system uses two 6V batteries to power the vehicle movement motors as well as the grass cutter motor. We also use a solar panel to charge the battery so that there is no need of charging it externally. The grass cutter and vehicle motors are interfaced to a PIC 18F4550 that controls the working of all the motors. It is also interfaced to an obstacle sensor for object detection. The micro-controller moves the vehicle motors in forward direction in case no obstacle is detected. On obstacle detection the obstacle sensor monitors it and the micro-controller thus stops the grass cutter to avoid any damage to the object. Micro-controller then turns the robotic movement as long as it gets clear of the object and then moves the grass cutter in forward direction again.

Keywords: Solar Panel, PIC18F4550, Obstacle Sensor ________________________________________________________________________________________________________ I.

INTRODUCTION

Now day’s pollution is major issue for whole world. Pollution is manmade and can be seen in our homes. In case gas powered lawn movers due to emission of gases it is responsible for pollution. Also the cost of fuel is increasing hence it is not efficient. So the solar powered grass cutter is introduced. Solar powered grass cutter can be described as the application of solar energy to power an electric motor which in rotates a blades which does the moving on lawn. Solar energy is the renewable energy. It uses the photovoltaic panel to generate the energy needed to power the mover.

II. LITERATURE SURVEY The first lawn mower invented by Edwin Budding in 1830. Budding's mower was designed primarily to cut the grass on sports grounds and extensive garden. Budding's first machine was 19 inches (480mm) wide with a frame made of iron. The mower was pushed from behind. Cast iron gear wheels transmitted power from the rear roller to the cutting cylinder, allowing the real roller to drive the knives on the cutting cylinder the ratio was 16:1. Another roller placed between the cutting cylinder and the main or land roller could be raised or lowered to alter the height of cut. There are a lot of sources of air pollution. Lawn-mower emissions contribute nearly 33 percent to the total pollution in metropolitan areas. Battery-powered versions of your favorite lawn and garden tools are becoming available as technology improves battery life. While still relying on electric energy to power the battery, this equipment's overall contribution to air pollution is significantly less than their gas-powered cousins. The most important attribute for an electric lawn mower is power, because the last thing you want to do is stop and wait for your mower battery to recharge after you have already mowed half of your yard. Our in-house team of experts tested each of the electric mowers on our lineup. We measured the average battery run time; that is, how long the mower lasts on a full charge and the amount of time it took to recharge the battery or batteries. Electric lawn mowers do not operate as long as gas lawn mowers. The user will turn on Lawn Buddy and place it in the center of the lawn and walk away while the lawn is being cut. There are two cutting patterns available for Lawn Buddy, spiral and random. Once Lawn Buddy is set in the center it will cut spirally until one of the sensors is tripped. Once it senses it is not on grass any more then it will back up and run the random cutting pattern.

All rights reserved by www.ijste.org

87

Solar based Automatic Grass Cutter (IJSTE/ Volume 3 / Issue 07 / 018)

III. BLOCK DIAGRAM

Fig. 1.1: Block Diagram

The block diagram of overall system is as shown in fig 1.1.The solar panel is 10watt, 12Volt that provides power to charge a 12V vehicle or battery. Grass cutter model used DC motor to convert the electrical energy into mechanical energy that also interfaced with blades for cutting the grass. In this system uses two 6V batteries to power the vehicle movement motor as well as the grass cutter motor. It has panel mounted in particular arrangement so that it can receive solar energy from the sun. Solar panel used to convert solar energy into electrical energy this energy stored in batteries with the help of solar charger. Motor connected to the battery. This motor starts and stops with the help of motor drive. Thus power delivered to the mechanism which forces it to rotate blades and cut the grass.

Solar Panel: Features:  10-watt monocrystalline photovoltaic solar panel-output voltage 12V-grade a solar cells-17%  Maximum/Peak-voltage:17.3V  Open circuit voltage:21.7V  Maximum/Peak current:0.58A  Short circuit current:0.65A Battery: Features: 1) Optimal starting power 2) Mountable in virtually any position 3) 15 times more vibration resistant 4) Faster recharging 5) Up to 3*longer life DC motor: Features:  Motor regulation:24000 RPM  Maximum current specification: 115mA  Rated voltage:6V  Torque:>250g.cm(according to blade)  Insulation resistance:>10ohms

All rights reserved by www.ijste.org

88

Solar based Automatic Grass Cutter (IJSTE/ Volume 3 / Issue 07 / 018)

IV. SCOPE OF FUTURE If high watt panel are used then machine can be applicable during night time for garden, because it can store more power. Grass cutting can be made more efficient by adding more motor with blades in the front side of the machine. Programming can be enhancing to make the device performance for different operation.

REFERENCES [1] [2] [3] [4] [5]

Edwin Budding Invented the first lawn mower in 1830.

Ashish Kumar Choudhari, “Experimental study of electricity based grass cutter”.

Darwin Ramos, “Solar Powered Lawn Mower”.

P. Amrutesh, “Solar Grass Cutter Using Scotch Yoke Mechanism”.

C.P.Fundamentals of renewable energy systems, New Age international limited publishers, New Delhi, 2005

All rights reserved by www.ijste.org

89